Have not been using the Bridge much since OS 2, but I did have several work arounds for problems like that. Obviously, wait as long as you are willing to wait for whatever it is to work itself out. Sometimes selecting another message and then selecting the problem message would cause the problem message to display. Closing the Bridge message app and then opening it again would often resolve a problem. You get the idea. Next step if problem is still not resolved would be either reboot the devices or shut down and restart the Bridge, depending on your guess or whichever is least effort, then try the other if the first guess didn't fix it.